What version of Solr are you using? ‘cause 8x has this definition for _version_

<!-- doc values are enabled by default for primitive types such as long so we 
don't index the version field  -->
 <field name="_version_" type="plong" indexed="false" stored="false"/>

and I find no text like you’re seeing in any schema file in 8x….

So with a prior version, “try it and see”? See: 
https://issues.apache.org/jira/browse/SOLR-9449 and linked JIRAs,
the _version_ can be indexed=“false” since 6.3 at least if it’s 
docValues=“true". It’s not clear to me that it needed
to be indexed=“true” even before that, but no guarantees.

updateLog will be defined in solrconfig.xml, but unless you’re on a very old 
version of Solr it doesn’t matter 
‘cause you don’t need to have indexed=“true”. Updatelog is not necessary if 
you’re not running SolrCloud...

I strongly urge you to completely remove all your indexes (perhaps create a new 
collection) and re-index
from scratch if you change the definition. You might be able to get away with 
deleting all the docs then
re-indexing, but just re-indexing all the docs without starting fresh can have 
“interesting” results.

Best,
Erick

> On Sep 14, 2020, at 5:16 PM, matthew sporleder <msporle...@gmail.com> wrote:
> 
> Yes but "the _version_ field is also a non-indexed, non-stored single
> valued docValues field;"  <- is that a problem?
> 
> My schema has this:
>  <!-- to use updateLog: _version_field must exist in schema, using
>       indexed="true" stored="true" and multiValued="false"
>  -->
>  <field name="_version_" type="long" indexed="true" stored="true"/>
> 
> I don't know if I use the updateLog or not.  How can I find out?
> 
> I think that would work for me as I could just make a dynamic fild like:
> <dynamicField name="*_atomici" type="int" indexed="false"
> stored="false" multiValued="false" required="false" docValues="true"
> />
> 
> ---
> Yes it is just for functions, sorting, and boosting
> 
> On Mon, Sep 14, 2020 at 4:51 PM Erick Erickson <erickerick...@gmail.com> 
> wrote:
>> 
>> Have you seen “In-place updates”?
>> 
>> See:
>> https://lucene.apache.org/solr/guide/8_1/updating-parts-of-documents.html
>> 
>> Then use the field as part of a function query. Since it’s non-indexed, you
>> won’t be searching on it. That said, you can do a lot with function queries
>> to satisfy use-cases.
>> 
>> Best.
>> Erick
>> 
>>> On Sep 14, 2020, at 3:12 PM, matthew sporleder <msporle...@gmail.com> wrote:
>>> 
>>> I have hit a bit of a cross-road with our usage of solr where I want
>>> to include some slightly dynamic data.
>>> 
>>> I want to ask solr to find things like "text query" but only if they
>>> meet some specific criteria.  When I have all of those criteria
>>> indexed, everything works great.  (text contains "apples", in_season=1
>>> ,sort by latest)
>>> 
>>> Now I would like to add a criteria which changes every day -
>>> popularity of a document, specifically.  This appeared to be *the*
>>> canonical use case for external field files but I have 50M documents
>>> (and growing) so a *text* file doesn't fit the bill.
>>> 
>>> I also looked at using a !join but the limitations of !join, as I
>>> understand them, appear to mean I can't use it for my use case? aka I
>>> can't actually use the data from my traffic-stats core to sort/filter
>>> "text contains" "apples", in_season=1, sort by most traffic, sort by
>>> latest
>>> 
>>> The last option appears to be updating all of my documents every
>>> single day, possibly using atomic/partial updates, but even those have
>>> a growing list of gotchas: losing stored=false documents is a big one,
>>> caveats I don't quite understand related to copyFields, changes to the
>>> _version_ field (the _version_ field is also a non-indexed, non-stored
>>> single valued docValues field;), etc
>>> 
>>> Where else can I look?  The last time we attempted something like this
>>> we ended up rebuilding the index from scratch each day and shuffling
>>> it out, which was really pretty nasty.
>>> 
>>> Thanks,
>>> Matt
>> 

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